[sr-dev] git:master:42228552: core: helper functions to search variants of str in another str

Module: kamailio Branch: master Commit: 42228552b72267786561704f120e3da3aac5fd89 URL: https://github.com/kamailio/kamailio/commit/42228552b72267786561704f120e3da… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: 2020-09-03T12:47:50+02:00 core: helper functions to search variants of str in another str --- Modified: src/core/tcp_read.c Modified: src/core/ut.c Modified: src/core/ut.h --- Diff: https://github.com/kamailio/kamailio/commit/42228552b72267786561704f120e3da… Patch: https://github.com/kamailio/kamailio/commit/42228552b72267786561704f120e3da… --- diff --git a/src/core/tcp_read.c b/src/core/tcp_read.c index 655db7da7b..6a005a9a32 100644 --- a/src/core/tcp_read.c +++ b/src/core/tcp_read.c @@ -110,26 +110,6 @@ int tcp_set_clone_rcvbuf(int v) } #ifdef READ_HTTP11 -static inline char *strfindcasestrz(str *haystack, char *needlez) -{ - int i,j; - str needle; - - needle.s = needlez; - needle.len = strlen(needlez); - for(i=0;i<haystack->len-needle.len;i++) { - for(j=0;j<needle.len;j++) { - if ( !((haystack->s[i+j]==needle.s[j]) || - ( isalpha((int)haystack->s[i+j]) - && ((haystack->s[i+j])^(needle.s[j]))==0x20 )) ) - break; - } - if (j==needle.len) - return haystack->s+i; - } - return 0; -} - int tcp_http11_continue(struct tcp_connection *c) { struct dest_info dst; @@ -161,7 +141,7 @@ int tcp_http11_continue(struct tcp_connection *c) return 0; /* check for Expect header */ - if(strfindcasestrz(&msg, "Expect: 100-continue")!=NULL) + if(str_casesearch_strz(&msg, "Expect: 100-continue")!=NULL) { init_dst_from_rcv(&dst, &c->rcv); if (tcp_send(&dst, 0, HTTP11CONTINUE, HTTP11CONTINUE_LEN) < 0) { @@ -169,7 +149,7 @@ int tcp_http11_continue(struct tcp_connection *c) } } /* check for Transfer-Encoding header */ - if(strfindcasestrz(&msg, "Transfer-Encoding: chunked")!=NULL) + if(str_casesearch_strz(&msg, "Transfer-Encoding: chunked")!=NULL) { c->req.flags |= F_TCP_REQ_BCHUNKED; ret = 1; @@ -178,7 +158,7 @@ int tcp_http11_continue(struct tcp_connection *c) * - HTTP Via format is different that SIP Via * - workaround: replace with Hia to be ignored by SIP parser */ - if((p=strfindcasestrz(&msg, "\nVia:"))!=NULL) + if((p=str_casesearch_strz(&msg, "\nVia:"))!=NULL) { p++; *p = 'H'; diff --git a/src/core/ut.c b/src/core/ut.c index 90b01d1026..0189b642ab 100644 --- a/src/core/ut.c +++ b/src/core/ut.c @@ -296,6 +296,53 @@ char *str_search(str *text, str *needle) return NULL; } +/** + * @brief case insensitive search for occurence of needle in text + * @return pointer to start of needle in text or NULL if the needle + * is not found + */ +char *str_casesearch(str *text, str *needle) +{ + int i,j; + for(i=0;i<text->len-needle->len;i++) { + for(j=0;j<needle->len;j++) { + if ( !((text->s[i+j]==needle->s[j]) || + ( isalpha((int)text->s[i+j]) + && ((text->s[i+j])^(needle->s[j]))==0x20 )) ) + break; + } + if (j==needle->len) + return text->s+i; + } + return 0; +} + +/** + * portable strcasestr() - the libc version requires #define _GNU_SOURCE + */ +char *strz_casesearch_strz(char *textz, char *needlez) +{ + str text; + + text.s = textz; + text.len = strlen(textz); + + return str_casesearch_strz(&text, needlez); +} + +/** + * case insensitive search of a charz string 'needlez' inside str 'text' + */ +char *str_casesearch_strz(str *text, char *needlez) +{ + str needle; + + needle.s = needlez; + needle.len = strlen(needlez); + + return str_casesearch(text, &needle); +} + /* * ser_memmem() returns the location of the first occurrence of data * pattern b2 of size len2 in memory block b1 of size len1 or diff --git a/src/core/ut.h b/src/core/ut.h index 56c1f9e157..6ef2e079bc 100644 --- a/src/core/ut.h +++ b/src/core/ut.h @@ -1053,6 +1053,12 @@ char* get_abs_pathname(str* base, str* file); */ char *str_search(str *text, str *needle); +char *str_casesearch(str *text, str *needle); + +char *strz_casesearch_strz(char *textz, char *needlez); + +char *str_casesearch_strz(str *text, char *needlez); + /* * ser_memmem() returns the location of the first occurrence of data * pattern b2 of size len2 in memory block b1 of size len1 or